public bool rotate_stretch(double strx, double stry, Stretching kind, double angle, out Bitmap ans)
{
if (angle > MathWork.pi() * 2 || angle < 0)
{
if (output != null)
{
output.Dispose();
}
output = null;
ans = null;
return(false);
}
try
{
laststrx = strx;
laststry = stry;
int diagonal = CalculateDiagonal(origin.Size, strx, stry);
Size anssize = CalculateSize(origin.Size, strx, stry, angle, diagonal);
int rkind = 0;
int basement = 0;
double xend = 0, yend = 0;
if (angle < MathWork.pi() / 2)
{
rkind = 1;
MathWork.rotate(diagonal, diagonal, diagonal, diagonal + origin.Height * stry, angle, ref xend, ref yend);
basement = MathWork.round(xend);
}
else if (angle < MathWork.pi())
{
rkind = 2;
MathWork.rotate(diagonal, diagonal, diagonal, diagonal + origin.Height * stry, angle, ref xend, ref yend);
basement = MathWork.round(yend);
}
else if (angle < MathWork.pi() * 3 / 2)
{
rkind = 3;
MathWork.rotate(diagonal, diagonal, diagonal + origin.Width * strx, diagonal, angle, ref xend, ref yend);
basement = MathWork.round(xend);
}
else
{
rkind = 4;
MathWork.rotate(diagonal, diagonal, diagonal + origin.Width * strx, diagonal, angle, ref xend, ref yend);
basement = MathWork.round(yend);
}
if (output != null)
{
output.Dispose();
}
output = new Bitmap(anssize.Width, anssize.Height);
pb.Maximum = anssize.Height;
oupb = new PointBitmap(output);
oupb.LockBits();
#region ComputeEveryPixel
double u, v, temp;
int ansr = 0, ansg = 0, ansb = 0;
int oldxint = 0, oldyint = 0;
int oriyint = 0, orixint = 0;
double Sup1 = 1, Sup0 = 1, Sus1 = 1, Sus2 = 1, Svp1 = 1, Svp0 = 2, Svs1 = 3, Svs2 = 1;
double kk1r = 1, kk2r = 1, kk3r = 1, kk4r = 1, kk1g = 1, kk2g = 2, kk3g = 3, kk4g = 2, kk1b = 3, kk2b = 2, kk3b = 1, kk4b = 2;
Color a11, a12, a13, a14, a21, a22, a23, a24, a31, a32, a33, a34, a41, a42, a43, a44;
#region init a11 to a44
a11 = Color.Empty;
a12 = Color.Empty;
a13 = Color.Empty;
a14 = Color.Empty;
a21 = Color.Empty;
a22 = Color.Empty;
a23 = Color.Empty;
a24 = Color.Empty;
a31 = Color.Empty;
a32 = Color.Empty;
a33 = Color.Empty;
a34 = Color.Empty;
a41 = Color.Empty;
a42 = Color.Empty;
a43 = Color.Empty;
a44 = Color.Empty;
ExtraGetPixelRef(0, 0, ref a11);
ExtraGetPixelRef(0, 0, ref a12);
ExtraGetPixelRef(1, 0, ref a13);
ExtraGetPixelRef(2, 0, ref a14);
ExtraGetPixelRef(0, 0, ref a21);
ExtraGetPixelRef(0, 0, ref a22);
ExtraGetPixelRef(1, 0, ref a23);
ExtraGetPixelRef(2, 0, ref a24);
ExtraGetPixelRef(0, 1, ref a31);
ExtraGetPixelRef(0, 1, ref a32);
ExtraGetPixelRef(1, 1, ref a33);
ExtraGetPixelRef(2, 1, ref a34);
ExtraGetPixelRef(0, 2, ref a41);
ExtraGetPixelRef(0, 2, ref a42);
ExtraGetPixelRef(1, 2, ref a43);
ExtraGetPixelRef(2, 2, ref a44);
#endregion
Color x_y, x_1_y, x_y_1, x_1_y_1;
#region init x_y to x_1_y_1
x_y = ExtraGetPixel(0, 0);
x_1_y = ExtraGetPixel(1, 0);
x_y_1 = ExtraGetPixel(0, 1);
x_1_y_1 = ExtraGetPixel(1, 1);
#endregion
int i, j;
for (i = 0; i < anssize.Height; i++)
{
pb.PerformStep();
for (j = 0; j < anssize.Width; j++)
{
Point now = new Point();
if (rkind == 1)
{
now.X = basement + j;
now.Y = anssize.Height - i + diagonal;
//now.Y = diagonal + i;
}
else if (rkind == 2)
{
now.X = j + diagonal - anssize.Width;
now.Y = basement + anssize.Height - i;
//now.Y = basement + i;
}
else if (rkind == 3)
{
now.X = basement + j;
now.Y = diagonal - i;
//now.Y = i + diagonal - origin.Height;
}
else
{
now.X = diagonal + j;
now.Y = basement + anssize.Height - i;
//now.Y = basement + i;
}
PointF orip = ReachOrigin(now, strx, stry, angle, diagonal);
if (orip == BlackPoint)
{
oupb.SetPixel(j, i, Color.Black);
//oldxint = orixint;
continue;
}
oriyint = MathWork.floor(orip.Y);
orixint = MathWork.floor(orip.X);
v = orip.Y - oriyint;
u = orip.X - orixint;
#region switch
switch (kind)
{
case Stretching.Nearest:
oupb.SetPixel(j, i, ExtraGetPixel(orixint, oriyint));
break;
case Stretching.Bilinear:
if (oldxint != orixint || oldyint != oriyint)
{
x_y = ExtraGetPixel(orixint, oriyint);
x_1_y = ExtraGetPixel(orixint + 1, oriyint);
x_y_1 = ExtraGetPixel(orixint, oriyint + 1);
x_1_y_1 = ExtraGetPixel(orixint + 1, oriyint + 1);
}
temp = x_y.R + u * (x_1_y.R - x_y.R);
ansr = MathWork.upcolor(MathWork.round(temp + v * (x_y_1.R - temp + u * (x_1_y_1.R - x_y_1.R))));
temp = x_y.G + u * (x_1_y.G - x_y.G);
ansg = MathWork.upcolor(MathWork.round(temp + v * (x_y_1.G - temp + u * (x_1_y_1.G - x_y_1.G))));
temp = x_y.B + u * (x_1_y.B - x_y.B);
ansb = MathWork.upcolor(MathWork.round(temp + v * (x_y_1.B - temp + u * (x_1_y_1.B - x_y_1.B))));
oupb.SetPixel(j, i, Color.FromArgb(ansr, ansg, ansb));
break;
case Stretching.Bicubic:
Sup1 = MathWork.KernelFunS(u + 1);
Sup0 = MathWork.KernelFunS(u + 0);
Sus1 = MathWork.KernelFunS(u - 1);
Sus2 = MathWork.KernelFunS(u - 2);
Svp1 = MathWork.KernelFunS(v + 1);
Svp0 = MathWork.KernelFunS(v + 0);
Svs1 = MathWork.KernelFunS(v - 1);
Svs2 = MathWork.KernelFunS(v - 2);
if (oldxint != orixint || oldyint != oriyint)
{
ExtraGetPixelRef(orixint - 1, oriyint - 1, ref a11);
ExtraGetPixelRef(orixint - 0, oriyint - 1, ref a12);
ExtraGetPixelRef(orixint + 1, oriyint - 1, ref a13);
ExtraGetPixelRef(orixint + 2, oriyint - 1, ref a14);
ExtraGetPixelRef(orixint - 1, oriyint - 0, ref a21);
ExtraGetPixelRef(orixint - 0, oriyint - 0, ref a22);
ExtraGetPixelRef(orixint + 1, oriyint - 0, ref a23);
ExtraGetPixelRef(orixint + 2, oriyint - 0, ref a24);
ExtraGetPixelRef(orixint - 1, oriyint + 1, ref a31);
ExtraGetPixelRef(orixint - 0, oriyint + 1, ref a32);
ExtraGetPixelRef(orixint + 1, oriyint + 1, ref a33);
ExtraGetPixelRef(orixint + 2, oriyint + 1, ref a34);
ExtraGetPixelRef(orixint - 1, oriyint + 2, ref a41);
ExtraGetPixelRef(orixint - 0, oriyint + 2, ref a42);
ExtraGetPixelRef(orixint + 1, oriyint + 2, ref a43);
ExtraGetPixelRef(orixint + 2, oriyint + 2, ref a44);
}
kk1r = Sup1 * a11.R + Sup0 * a12.R + Sus1 * a13.R + Sus2 * a14.R;
kk2r = Sup1 * a21.R + Sup0 * a22.R + Sus1 * a23.R + Sus2 * a24.R;
kk3r = Sup1 * a31.R + Sup0 * a32.R + Sus1 * a33.R + Sus2 * a34.R;
kk4r = Sup1 * a41.R + Sup0 * a42.R + Sus1 * a43.R + Sus2 * a44.R;
kk1g = Sup1 * a11.G + Sup0 * a12.G + Sus1 * a13.G + Sus2 * a14.G;
kk2g = Sup1 * a21.G + Sup0 * a22.G + Sus1 * a23.G + Sus2 * a24.G;
kk3g = Sup1 * a31.G + Sup0 * a32.G + Sus1 * a33.G + Sus2 * a34.G;
kk4g = Sup1 * a41.G + Sup0 * a42.G + Sus1 * a43.G + Sus2 * a44.G;
kk1b = Sup1 * a11.B + Sup0 * a12.B + Sus1 * a13.B + Sus2 * a14.B;
kk2b = Sup1 * a21.B + Sup0 * a22.B + Sus1 * a23.B + Sus2 * a24.B;
kk3b = Sup1 * a31.B + Sup0 * a32.B + Sus1 * a33.B + Sus2 * a34.B;
kk4b = Sup1 * a41.B + Sup0 * a42.B + Sus1 * a43.B + Sus2 * a44.B;
ansr = MathWork.upcolor(MathWork.round(Svp1 * kk1r + Svp0 * kk2r + Svs1 * kk3r + Svs2 * kk4r));
ansg = MathWork.upcolor(MathWork.round(Svp1 * kk1g + Svp0 * kk2g + Svs1 * kk3g + Svs2 * kk4g));
ansb = MathWork.upcolor(MathWork.round(Svp1 * kk1b + Svp0 * kk2b + Svs1 * kk3b + Svs2 * kk4b));
oupb.SetPixel(j, i, Color.FromArgb(ansr, ansg, ansb));
break;
}
#endregion
oldxint = orixint;
}
oldyint = oriyint;
#if MYDEBUG
DebugLogger.LogTimeStamp();
#endif
}
#endregion
oupb.UnlockBits();
ans = output;
pb.Value = 0;
return(true);
}
catch (Exception e)
{
ans = null;
return(false);
}
}
private void insert_Click(object sender, EventArgs e)
{
double strx, stry, angle = 0;
try
{
strx = Double.Parse(textBox1.Text);
stry = Double.Parse(textBox2.Text);
if (checkBox1.Checked)
{
if (radioButton1.Checked)
{
angle = Double.Parse(textBox3.Text) * MathWork.pi() / 180;
}
else
{
angle = Double.Parse(textBox3.Text);
}
}
if (MathWork.abs(angle) < 0.000001D)
{
if ((string)comboBox1.SelectedItem == "最近邻插值")
{
pictran.stretchpicture(strx, stry, Pictransformer.Stretching.Nearest, out output);
}
else if ((string)comboBox1.SelectedItem == "双线性插值")
{
pictran.stretchpicture(strx, stry, Pictransformer.Stretching.Bilinear, out output);
}
else if ((string)comboBox1.SelectedItem == "双三次插值")
{
pictran.stretchpicture(strx, stry, Pictransformer.Stretching.Bicubic, out output);
}
}
else
{
if ((string)comboBox1.SelectedItem == "最近邻插值")
{
pictran.rotate_stretch(strx, stry, Pictransformer.Stretching.Nearest, angle, out output);
}
else if ((string)comboBox1.SelectedItem == "双线性插值")
{
pictran.rotate_stretch(strx, stry, Pictransformer.Stretching.Bilinear, angle, out output);
}
else if ((string)comboBox1.SelectedItem == "双三次插值")
{
pictran.rotate_stretch(strx, stry, Pictransformer.Stretching.Bicubic, angle, out output);
}
if (checkBox2.Checked)
{
pictran.crop(out output);
}
}
if (output == null)
{
throw new Exception();
}
pictureBox1.Image = White;
if (MathWork.max(output.Width, output.Height) > MAXWH)
{
double resized = (double)MAXWH / MathWork.max(output.Width, output.Height);
MessageBox.Show("图像太大，将以" + MathWork.round(100 * resized).ToString() + "%的比例缩放显示图片。若想查看图片全貌，请保存图片。");
Bitmap bpt = new Bitmap(MAXWH, MAXWH);
Pictransformer ptmp = new Pictransformer();
ptmp.start(output, progressBar1);
ptmp.stretchpicture(resized, resized, Pictransformer.Stretching.Nearest, out bpt);
pictureBox1.Image = bpt;
ptmp.stop2();
}
else
{
pictureBox1.Image = output;
}
save.Enabled = true;
}
catch (Exception es)
{
MessageBox.Show("参数错误！（角度请小于360°，大于0°）");
save.Enabled = false;
return;
}
}